A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6620-00-148-9613
NSN 6240-01-633-9357
NSN 6150-01-269-9864
NSN 2925-01-538-1343
NSN 5998-00-190-2272
NSN 6645-00-574-9712
NSN 5910-01-598-2855
NSN 2925-00-693-5748
NSN 5999-01-026-8836
NSN 5985-01-199-5329
NSN 5910-01-411-6189
NSN 6135-01-319-0623